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Line obstacle monitoring and alarming system and method based on three-dimensional imaging

A technology of three-dimensional imaging and obstacles, which is applied in three-dimensional object recognition, instruments, characters and pattern recognition, etc., can solve the problem of inability to distinguish the priority of alarm data information transmission alarm level, volume, shape and moving track data to judge obstacles, not to It can truly reflect the actual nature of obstacles and other issues, and achieve the effects of improving calculation accuracy, strong real-time performance, and balancing contradictions

Active Publication Date: 2020-03-17
SICHUAN SOUTHWEST JIAOTONG UNIV RAILWAY DEV
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AI Technical Summary

Problems solved by technology

[0004] (1) This method uses laser to scan a plane to obtain only the two-dimensional plane graphic image data of the obstacle, and the two-dimensional data cannot truly reflect the actual nature of the obstacle, and cannot accurately identify the obstacle;
[0005] (2) The installation method of the laser is a certain distance above the rail and along the extension line of the two rails. It can only inspect the section of the obstacle in the designated area above the rail, which is easily affected by external conditions such as weeds and ballast. interference, causing false positives
[0006] (3) The priority transmission of the alarm data information and the distinction of the alarm level cannot be carried out, which will affect the judgment of the real situation of the alarm when the network condition is not good
[0007] (4) This method cannot judge the type of obstacles based on the volume, shape and moving track data of the obstacles in the collected 3D point cloud image information

Method used

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  • Line obstacle monitoring and alarming system and method based on three-dimensional imaging
  • Line obstacle monitoring and alarming system and method based on three-dimensional imaging
  • Line obstacle monitoring and alarming system and method based on three-dimensional imaging

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Effect test

Embodiment 1

[0048] Such as figure 1 As shown, in Embodiment 1, a line obstacle monitoring and warning system based on three-dimensional imaging specifically includes:

[0049] Multiple front-end equipment: installed on the railway line to collect three-dimensional data information signals of obstacles on the railway line and receive control signals for control and alarm;

[0050] A plurality of front-end main control cabinets: installed on the railway line and communicated with the front-end equipment, so as to receive data information signals of obstacles sent by the front-end equipment and send control signals to the front-end equipment;

[0051] Railway control center: communicating with the front-end main control cabinets, receiving data information transmitted by the front-end main control cabinets, and controlling all front-end main control cabinets as a whole.

[0052] The front-end equipment includes a three-dimensional data acquisition device that is hoisted on one side of the r...

Embodiment 2

[0062] This embodiment has the same inventive concept as Embodiment 1. On the basis of Embodiment 1, a method for monitoring and alarming line obstacles based on three-dimensional imaging is provided. The method specifically includes the following steps:

[0063] S1. The front-end equipment converts the collected obstacle information into alarm data through calculation, and pushes it to the server; among them, the obstacle data information collected by the 3D laser radar and the camera is transmitted to the front-end main control cabinet for calculation and conversion into Alarm data, and push to the server;

[0064] S2. The server judges whether to push the alarm data to the client according to the analysis result; wherein, the server also needs to analyze and judge the obstacle data information;

[0065] S3. The client terminal performs corresponding processing according to the alarm level; judges the alarm level according to the pushed alarm data and multiple scan and analy...

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Abstract

The invention discloses a line obstacle monitoring and alarming system and method based on three-dimensional imaging, and belongs to the technical field of railway safety. The line obstacle monitoringand alarming method comprises a step of judging the type of an obstacle: extracting an obstacle contour information point cloud cluster in a three-dimensional point cloud image, and judging whether the obstacles are the same obstacle or not; if the obstacle is the same obstacle, calculating the volume, angle and position of the obstacle according to the characteristics of the obstacle contour information point cloud cluster, judging whether the obstacle is in a motion state or not according to the position information of the obstacle, and calculating the moving speed of the obstacle if the obstacle is in the motion state; and performing feature matching with the point cloud sample library according to the volume, shape and moving track data of the obstacle contour information point cloudcluster to realize obstacle classification. According to the line obstacle monitoring and alarming method, the property and the residence time of the obstacle can be accurately judged, and graded alarming is carried out according to the type and the moving speed of the obstacle, and the railway safety is ensured.

Description

technical field [0001] The invention relates to the technical field of railway safety, in particular to a three-dimensional imaging-based monitoring and alarming system and method for line obstacles. Background technique [0002] The safety of railway lines is the eternal theme of railway transportation. In order to strengthen the protection and management of railway lines to ensure the safety of railway traffic and personal safety, and reduce personal casualties inside and outside the railway, it is important for railway operations to monitor obstacles on railway lines through certain monitoring equipment. An essential means of security. [0003] The current Chinese patent application number is 201710269081.9, which discloses the "Automatic Monitoring and Recognition Method of Railway Line Obstacles", which includes sending out laser light along a plane above the railway line according to the set angle range, and performing a sweeping search; receiving the returned laser si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/46
CPCG06V20/64G06V20/41G06V10/44
Inventor 赵国堂杨国涛王鹏翔王成何获王彪陈丽军黄斌袁小华石伟陈晓东胡春林周忞
Owner SICHUAN SOUTHWEST JIAOTONG UNIV RAILWAY DEV
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